18815991

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2693}}^1$

素因数の和:2850

約数の個数: 16

約数和(自身を含む): 26767584

約数和(自身を除く): 7951593

約数列:

[1, 3, 17, 51, 137, 411, 2329, 2693, 6987, 8079, 45781, 137343, 368941, 1106823, 6271997, 18815991]

約数ペア:

[(1, 18815991), (3, 6271997), (17, 1106823), (51, 368941), (137, 137343), (411, 45781), (2329, 8079), (2693, 6987)]